docs: def imsave(filename, image, normalize = False, format = None, quality = -1):
      """Convenience function that uses QImage.save to save an image to the
      given file.  This is intentionally similar to scipy.misc.imsave.
      However, it supports different optional arguments:
  
      :param normalize: see :func:`array2qimage` (which is used internally)
      :param format: image filetype (e.g. 'PNG'),  (default: check filename's suffix)
      :param quality: see QImage.save (0 = small .. 100 = uncompressed, -1 = default compression)
      :returns: boolean success, see QImage.save
      
      This function has been added in version 1.4.
      """
      qImage = array2qimage(image, normalize = normalize)
      return qImage.save(filename, format, quality)